Combined drawing-compasses and pencil-case.



V. LAMPBL. COMBINED DRAWING GOMPASSES AND PENCIL CASE.

APPLICATION FILED MAY 25, 1910.

1,028,228. Patented June 4, 1912.

WI'inE 55125 VINGENZ LAMPEL, OF LEIFA, AUSTRIA-HUNGARY.

COMBINED DRAWING-COMPASSES AND PENCIL-CASE.

Specification of Letters Patent.

Patented June a, 1912..

Application filed May 25, 1910. Serial No. 563,291.

To all whom it may concern:

Be it known that I, ViNonNz LAMPEL, merchant, a subject of the Emperor of Austria-Hungary, and residing at Leipa, B0-

hemia, Austria-Hungary, have invented certain new and useful Improvements 'in Combined Drawing-Compasses and Pencil-Cases, of which the following is a specification.

The present invention relates to a drawing instrument which is adapted to serve both as a pair of compasses and as an ordinary pencil case.

The pencil case is formed by the closed up legs of the compasses and the pencil is capable of being retracted into the case so that the instrument can be conveniently carried in the pocket.

The invention is illustrated in the accompanying drawings, Figure 1 representing a side view of the instrument with its parts in position for being carried in the pocket, Fig. 2, a corresponding side view of the same used as pencil holder, Fig. 8, a corresponding side view of the same used as a pair of compasses, and Fig. 4, a side view of a cap used for maintaining the legs in closed position.

The instrument is composed of two compass-legs m and n which are hinged to one another at 2', both legs being made of sheet metal and of semi-circular cross section so that a hollow cylinder is formed when they are closed up. Near the hinge 2' a screw thread 79 is formed externally on the legs for the reception of a closing cap d which has a corresponding screw thread and which is applied to the legs when the instrument is to be used as a pencil case. The leg m is somewhat extended beyond the leg at, such extension consisting of a ring which completes the cylinder when the legs are closed. The leg at has a slidable extension Z which is also of semi-circular cross-section and which is fitted in the hollow of the leg, a longitudinal slot 6 being provided in the latter in which a headed pin f is guided be ing connected to the part Z and adapted to prevent any rotation of the latter. The extension Z tapers toward its lower end to form a compass point. Lateral notches g, g and g are made in the leg a along the slot 6 in which the pin f may be engaged for fixing the extension Z in various positions according to the desired length of the compass leg. The pencil is fitted in a sleeve which is adapted to slide inside the cylinder formed by the closed compass legs. This sleeve is connected by means of a pin to a ring a adapted to slide on the outside of the cylinder, the connecting pin being guided in a longitudinal slot 0 which is formed owing to the imperfect closing of the parts at n at one side. Two lateral notches b and 0 are made in the leg n at the lower extremity of the slot 0 in which the connecting pin of the ring a may be engaged for securing the pencil in two positions. When engaging the notch b, as shown in Fig. 2, the ring or also serves to hold the parts at and a together, the instrument being in this case used as pencil holder. The notch 0 is situated in the cylindrical extension of the leg m, so that, when the sleeve a is in engagement with said notch, as shown in Fig. 3, the leg '11, is free to turn on its hinge and the instrument can be used as a pair of compasses. In the latter position, the part Z is adjusted by means of the pin f and notches g1, g 9 so as to correspond with the length of the pencil.

lVhen it is desired to convert the compasses into a pencil case, the part Z is slid up under the partn which is thereupon closed on the part m, the cap (Z being then screwed on the closed up parts as shown in Fig. 2. In this position the instrument has the form of an ordinary pencil case in which the pencil may be retracted, as shown in Fig. 1, both pencil and compass point being protected in this posit-ion so that the instrument can be conveniently carried in a pocket.

The cap 03 may be used as a holder for a piece of india-rubber is (Fig. 4) which is fitted in a separate sleeve slidably arranged in the cap. Said sleeve is connected, through a slot, to an external ring 71, by means of which the rubber may be retracted into the cap, when the latter is to be screwed on the pencil case.

Having thus described my invention, what I claim and desire to secure by Letters Patent is A combined drawing compasses and pencil case, comprising two compass-legs of diiierent lengths and semi-circular cross section hinged together and formed with external screw threads near to the hinge, an ex tension of semi-circular cross section slidably arranged on the shorter leg and fitted with a locking pin guided in 'a notched longitudinal slot of said leg, a ring adapted to embrace said legs and slide thereon, a sleeve fitted with a pencil and connected to said ring by a pin and being adapted to slide inside said compass-legs when in a closed position, a notched slot formed by said legs when in closed position for guiding said pin, a closing cap fitted with internal screw threads and adapted to be applied to said legs when said extension is retracted in the hollow thereof and legs are in closed position, a sleeve slidably arranged in said cap and fitted with a piece of india-rubber, and a ring connected to said sleeve by means of a pin guided in a notched longitudinal slot of the said sleeve, and adapted to slide on said cap in unscrewed 15 position, substantially as set forth.

In testimony whereof, I afiix my signature in the presence of two witnesses.

VINGENZ LAMPEL. Witnesses:

VVILI-IELM ECKERT, PAUL ARRAs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

